The catalog
Patent invalidity dossiers.
7,175 patents in the database, sorted by number of on-file litigation cases. Of these, 2,988 have at least one tracked case across 6,606 litigations.
Demand letter analyzer
You got a patent demand letter. Now what?
Paste the letter — we extract the asserted patents, identify the asserter, characterize their litigation history, flag validity vulnerabilities, and draft a sample response letter your attorney can review. Free, private, ~2-3 minutes.
Analyze a patent
Drop a US patent number — we’ll verify it on Google Patents and generate the full invalidity dossier.
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- US72278420 cases6/8 sections
I'll search for current information on this patent, including any 2026 litigation activity. Let me run a couple more targeted searches to check for any 2026 litigation activity. Search Results — US Patent 7,227,842 Searches performed: US…
View full analysis →added 9/24/2026 - US72372530 cases6/8 sections
I'll search for the specific patent number and any CAFC 2026 docket activity. Let me run additional targeted searches on litigation/appeal activity and the current assignee. Search scope and method I searched for the exact identifier…
View full analysis →added 9/24/2026 - US72392260 cases6/8 sections
I'll verify the patent's current status and check for any litigation before summarizing. US 7,239,226 B2 — Verification Note First I ran searches against Google Patents, uspto.report, EPO Global Patent Index/Espacenet, and Federal Circuit…
View full analysis →added 9/29/2026 - US72401000 cases6/8 sections
I'll run several targeted searches for this specific patent number and for any 2026 CAFC activity. Let me check for reexamination history, litigation, and any 2026 Federal Circuit activity. Search summary — scope and what I actually found…
View full analysis →added 9/13/2026 - US72401060 cases6/8 sections
I'll search for authoritative information on US 7,240,106, including any 2026 CAFC activity. Let me check for litigation/PTAB activity and retrieve the exact independent claims. Sourcing caveat up front I searched for US 7,240,106 in the…
View full analysis →added 9/24/2026 - US72456320 cases6/8 sections
I'll verify the patent details and check for any litigation/docket activity. Let me check for litigation/docket records and verify the claim set. Let me confirm the full claim set and check for any CAFC 2026 activity. US Patent 7,245,632…
View full analysis →added 9/30/2026 - US72461730 cases6/8 sections
The initial searches returned no results. Let me try broader queries. US Patent 7,246,173 — Summary Bibliographic data (from the authoritative Google Patents record provided, consistent with USPTO records found via search) | Field | Value…
View full analysis →added 8/24/2026 - US72473230 cases6/8 sections
I'll search for authoritative information on this patent, including any litigation or docket activity. Let me run additional targeted searches for any litigation or PTAB activity. US Patent 7,247,323 — Analyst Summary Identification &…
View full analysis →added 9/30/2026 - US72493260 cases6/8 sections
I'll search for the patent and any related 2026 CAFC docket activity. US Patent 7,249,326 — Summary Note on identifier discipline: The searches surfaced look‑alikes that are not this patent — e.g. 8,027,326 ("'326 Patent," a…
View full analysis →added 9/24/2026 - US72546050 cases6/8 sections
I'll search for this specific patent number, including litigation/docket context. Initial queries returned nothing. Let me try alternative search formulations. Let me search for the claims text and any litigation or Federal Circuit…
View full analysis →added 9/30/2026 - US72574260 cases6/8 sections
I'll search for authoritative records on this patent number across USPTO and Federal Circuit sources. Let me dig into the claims text and any litigation/appeal history. Search Report — US Patent 7,257,426 Important scope note up front: I…
View full analysis →added 9/28/2026 - US72578330 cases6/8 sections
I'll search for authoritative information on this specific patent number. Let me check specifically for any 2026 litigation or CAFC activity on this patent. Let me confirm the independent claim set and check for any IPR/PGR proceedings. US…
View full analysis →added 9/24/2026 - US72656560 cases6/8 sections
I'll search for authoritative information on US 7,265,656, including any CAFC litigation. Let me run a couple more targeted searches to check for any litigation involving this specific patent number. US Patent 7,265,656 — Summary Bottom…
View full analysis →added 9/24/2026 - US7268990 cases6/8 sections
I'll search for this specific patent number across the requested sources. Initial broad searches returned mostly noise from unrelated patents (e.g., a 1968 application ser. no. 726,899 and litigation shorthand for a different "’899…
View full analysis →added 9/24/2026 - US72728050 cases6/8 sections
I'll verify this against live sources before summarizing. Now let me check for any CAFC litigation or 2026 docket activity involving this patent. US Patent 7,272,805 — Verification Summary Sources retrieved: Google Patents…
View full analysis →added 9/27/2026 - US7274140 cases6/8 sections
I'll search for this specific patent number across USPTO and litigation sources. Let me run more targeted searches on litigation databases and the patent record. Let me do one final targeted check for any docket or reexamination record…
View full analysis →added 9/27/2026 - US72795840 cases6/8 sections
I'll search for the specific patent number and check for any litigation activity. Let me run more targeted searches. Search Results Summary Important caveat on the searches: My web searches did not return any authoritative USPTO records or…
View full analysis →added 10/1/2026 - US72890240 cases6/8 sections
I'll verify this patent against live sources before summarizing. I ran the requested searches. Here's what I found and a concise summary. Sourcing note / scope of verification The two searches above were for the literal number 7289024…
View full analysis →added 9/24/2026 - US72894560 cases6/8 sections
I'll verify the patent record and check for any 2026 CAFC activity on this specific number before summarizing. The initial searches returned irrelevant hits. Let me run more targeted queries, including the specific CAFC/CourtListener…
View full analysis →added 9/27/2026 - US72955150 cases6/8 sections
I'll search for this specific patent number across USPTO and CAFC records. Let me run additional targeted searches to check for any litigation or CAFC activity involving this specific patent. Search results: US Patent 7,295,515 Important…
View full analysis →added 9/29/2026